You have a leak, one roofer has already looked at it and given you a number, and now you want a second opinion before you agree to anything. That is a sensible thing to want. A second opinion only helps, though, if the second roofer is looking at the same water you are. Two people can walk the same roof, each find a real defect, and still disagree about which one is letting rain into your bedroom. The first step is making sure the search starts from the same place.
Start with the stain, not the roof
Bring the second roofer inside before anyone climbs a ladder. Show them the ceiling stain, mark its outline with painter's tape, and photograph it with the date on the file. Water seldom shows up directly under where it enters. It runs along the underside of the deck, follows a rafter or a nail line, and drops through the drywall at the lowest point it reaches. A stain on the north side of a bedroom ceiling against an exterior wall could start a few feet up the slope, at a pipe boot, or at a wall flashing above the window. If the second roofer walks straight to the far slope without looking at the stain, you have bought a general look at the roof, not a check on your leak.
Ask them to note how the stain changed after the last rain. A stain that grows a few inches after a long, slow rain points to a different entry than one that appears within minutes of a hard wind-driven storm. Write down the date, the approximate rainfall, and the wind direction if you noticed it. Those notes cost nothing, and they narrow the search faster than any ladder work.
What to bring to the appointment
Gather the material before the visit so the second roofer starts with facts. Bring the first roofer's written findings if there were any, along with the photos they took. If they only gave a verbal opinion, write down what they said about the location and the cause as closely as you can remember it. Also bring dated photos of the stain at its largest, a short note of the rain events that caused it, the location of the attic access, and any receipts for earlier repairs to the same area. A roof that has been patched twice in the same spot has a history, and the next roofer needs to know about it.
- The first roofer's written notes or photos, if you have them
- Dated photos of the ceiling stain at its largest, with a tape measure in frame
- A list of rain events and what you saw during each one
- Receipts or descriptions of earlier repairs to that area of roof or wall
- The attic hatch location and a working flashlight
Ask each roofer where they think the water enters
Ask for a specific location, described with reference points you can check. 'Up near the top' is not a location. 'On the upper slope, about four feet below the ridge, on the left side of the plumbing vent' is one. Then ask what they would check to rule out the other likely spot. A roofer who has traced the leak can name the alternative and say what would confirm or exclude it. A roofer who has not yet traced it will usually say the roof is old and needs work, which may be true but does not answer the question you asked.
Compare the two answers on the same terms. If both name the same area, the second opinion has confirmed the first, and the remaining question is the scope of the repair. If they name different areas, the disagreement is useful information. It tells you the stain could come from more than one source, or that one of the two has not looked at the attic side of the same spot.
Look in the attic before anyone opens the shingles
The attic often answers the question before the roof does. Look at the underside of the roof deck directly above the ceiling stain. Dark staining around nail tips, rust on nail points, and wet or compressed insulation all point toward water that came through the deck at that spot. Daylight visible through a gap at a pipe, vent, or chimney is a strong sign too. Check the rafters and sheathing for soft or darkened wood, and check whether the insulation is damp at the stain itself, not just nearby.
Wet insulation should be handled with gloves and a dust mask, and damp wood should be photographed before anyone disturbs it. Do not spray or scrub it yourself while the roofers are still deciding what to do. The photos are the record of what the attic looked like on that day, and they help the second roofer explain what they found.
When the two answers disagree
If the opinions still conflict, ask each roofer to show you the spot. In the attic, that means pointing to the exact deck location and the nail or framing detail they think is responsible. On the roof, it means lifting the shingles at that spot and showing the flashing, underlayment, or fastener problem in a photo with a scale. Ask what would prove their version wrong. A roofer who can name a test that would show they were mistaken is more likely to have a real finding than one who insists without a test.
One method that settles a disagreement is a controlled water test. A person runs a garden hose on one area at a time, starting low on the slope and working upward, while someone in the attic watches the deck and the ceiling. It is slow. It needs a dry day, a clear enough window to test in sections, and two people who can communicate. Ask whether the second roofer will run the test, how long it will take, and whether they will photograph the results. A test done without documentation proves less than one that is recorded.
What a written scope should show
Keys documents the damage, puts a written scope with photos and measurements in the homeowner's hands, and attends as the contractor while the homeowner deals with their own insurer. Whichever roofer you choose, the written scope should name the located entry point, the repair method for that spot, the materials by product name, and the photos that support each line. It should also say what is outside the repair, such as an aging area elsewhere on the roof that was not part of the leak. Ask for that exclusion in writing too. It keeps a patch from quietly becoming a replacement later.
If an insurance claim is already open for the same leak, a second opinion does not change who represents you. Missouri law (RSMo 407.725) bars a roofing contractor from representing or negotiating your homeowner's insurance claim, so the contractor's role is to document the damage and attend as the contractor while you handle the claim with your own insurer.
Questions to ask before you choose
- Where exactly do you think the water enters, and how far is that from the stain?
- What would you check to rule out the other likely location?
- Will you look at the attic side of the spot before you open the shingles?
- Will the written scope list the materials by product name and include photos of each repair line?
- What is not included in this repair, and what would it take to address it?
If you want the spot walked with you before you decide, call Keys at (314) 220-2333. Bring the stain photos and the rain notes, and the walk will start where the water shows.